| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D090507.2 | GRW/VCEIL/M1 - Receiver failure | grwvceil25kM1.b1 |
| D090522.1 | GRW/MWR/M1 - Loose mirror | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D090527.2 | GRW/MWRP/M1 - Reprocessed: Updated calibration coefficients | grwmwrpM1.b1 |
| D090709.1 | GRW/MWRP/M1 - Missing data | grwmwrpM1.b1 |
| D090715.1 | GRW/MPL/M1 - Missing data | grwmplpolM1.b1, grwmplpolavgM1.c1, grwmplpolavgM1.s1 |
| D091002.1 | GRW/MWRP/M1 - Reprocessed: Re-calibration | grwmwrpM1.b1 |
| D100211.2 | GRW/CSPHOT/M1 - Obstruction in collimator tube | grwcsphotalm1duboM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotaotfiltM1.a1, grwcsphotaotfiltqaM1.a1, grwcsphotcoarsepfn1M1.a1, grwcsphotfinepfn1M1.a1, grwcsphotppM1.a1, grwcsphotsizeM1.a1, grwcsphottotalpfn1M1.a1 |
| D100216.6 | GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields | grwvceil25kM1.b1 |
| D100224.6 | GRW/MWR/M1 - Reprocessed: Biased LWP retrievals-Updated retrieval coefficients | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100326.2 | GRW/MWR/M1 - Incorrect ambient temperature | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100419.1 | GRW/CSPHOT/M1 - Instrument scanning problem | grwcsphotalm1duboM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotaotfiltM1.a1, grwcsphotaotfiltqaM1.a1, grwcsphotcoarsepfn1M1.a1, grwcsphotfinepfn1M1.a1, grwcsphotppM1.a1, grwcsphotsizeM1.a1, grwcsphottotalpfn1M1.a1 |
| D100504.2 | GRW/MWRP/M1 - Failed LN2 calibration | grwmwrpM1.b1 |
| D100716.1 | GRW/MWR/M1 - Incorrect instrument computer set-up | grwmwrtipM1.a1, grwmwrlosM1.b1 |
| D100830.1 | GRW/MWR/M1 - Erratic brightness temperature | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100830.3 | GRW/MWR/M1 - Missing data | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100909.1 | GRW/MWRP/M1 - Reprocessed: Updated calibration coefficients | grwmwrpM1.b1 |
| D100915.1 | GRW/AOS/M1 - Annual maintenance | grwaosM1.a1, grwaosauxM1.a1, grwaosccnM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1, grwnoaaaosfitrhM1.b1 |
| D101020.2 | GRW/AOS/M1 - Data processing problem | grwaosM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1 |
| D110110.1 | GRW/AOS/M1 - Discontinue fRH hygroscopic growth measurements | grwnoaaaosM1.b1, grwnoaaaosfitrhM1.b1 |
| D110203.1 | GRW/MWRP/M1 - Temp/RH sensor failure | grwmwrpM1.b1 |
| D110504.1 | GRW/MPL/M1 - Time clock Error | grwmplpolM1.b1, grwmplpolavgM1.c1, grwmplpolavgM1.s1 |
| D120820.1 | GRW/AOS/M1 - CPC undercounting | grwaosM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/22/2009 | 0925 | 05/16/2009 | 1010 |
| Subject: | GRW/VCEIL/M1 - Receiver failure |
| DataStreams: | grwvceil25kM1.b1 |
| Description: | The AMF VCEIL had lower-than-normal laser transmitter power, ~84%, so the instrument was replaced with a spare on 4/22. The spare VCEIL had just been repaired but began to display receiver failure warnings. Diagnostic information was sent to Vaisala and we discussed either replacing the receiver with the one from the original VCEIL (with the degraded transmitter) or replacing the transmitter in the original VCEIL with the one from the spare. Vaisala recommended the latter because the original VCEIL is a much newer unit. On 5/16, the site operator replaced the transmitter in the original VCEIL with the one from the spare, realigned the optics, recalibrated the laser, and put the instrument back into service, successfully correcting the problem. The data during this period were intermittently incorrect, containing warning flags and alarms and unreasonable cloud base heights. |
| Measurements: | grwvceil25kM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/01/2009 | 0000 | 06/16/2009 | 0745 |
| Subject: | GRW/MWR/M1 - Loose mirror |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| Description: | The data from the MWR were suspicious and became progressively worse. The problem was traced back to the fact that the screw that keeps the mirror in place had become loose and the mirror was freely rotating. The mirror was tightened on 6/9/2009, however the measurements were noisy until 6/16, when the instrument was rebooted and all the connections checked. Measurements between 5/1 and 6/9 should not be used. Data between 6/9 and 6/16 are usable, although they are very noisy. |
| Measurements: | grwmwrtipM1.a1:
grwmwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/01/2009 | 0000 | 05/15/2009 | 2100 |
| Subject: | GRW/MWRP/M1 - Reprocessed: Updated calibration coefficients |
| DataStreams: | grwmwrpM1.b1 |
| Description: | On 5/15 the K-band calibrations were updated with coefficients derived from tip curves. The 20090501-20090515 data were reprocessed to apply the updated calibration coefficients. |
| Measurements: | grwmwrpM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/09/2009 | 0100 | 08/19/2009 | 0830 |
| 12/10/2009 | 1400 | 02/15/2010 | 1020 |
| Subject: | GRW/MWRP/M1 - Missing data |
| DataStreams: | grwmwrpM1.b1 |
| Description: | Data are missing and unrecoverable. |
| Measurements: | grwmwrpM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/14/2009 | 2059 | 09/04/2009 | 0800 |
| Subject: | GRW/MPL/M1 - Missing data |
| DataStreams: | grwmplpolM1.b1, grwmplpolavgM1.c1, grwmplpolavgM1.s1 |
| Description: | Data are missing and unrecoverable. |
| Measurements: | grwmplpolavgM1.s1:
grwmplpolavgM1.c1:
grwmplpolM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 08/19/2009 | 0830 | 08/29/2009 | 1017 |
| Subject: | GRW/MWRP/M1 - Reprocessed: Re-calibration |
| DataStreams: | grwmwrpM1.b1 |
| Description: | After the new dewblower was installed there was a shift in the calibration of the instrument. The instrument was calibrated on 8/29. Data between 8/19 and 8/29 have been reprocessed to apply the new calibrations. Reprocessed data were archived in December 2009. |
| Measurements: | grwmwrpM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/01/2009 | 0000 | 05/06/2010 | 2359 |
| Subject: | GRW/CSPHOT/M1 - Obstruction in collimator tube |
| DataStreams: | grwcsphotalm1duboM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotaotfiltM1.a1, grwcsphotaotfiltqaM1.a1, grwcsphotcoarsepfn1M1.a1, grwcsphotfinepfn1M1.a1, grwcsphotppM1.a1, grwcsphotsizeM1.a1, grwcsphottotalpfn1M1.a1 |
| Description: | Data are suspect. There is a discrepancy between the 1640 channel and the other channels. The discrepancy is possibly related to the intermittent obstruction (a lizard) found in the collimator tube. There may also be ongoing degradation of the instrument possibly related to the lizard activity and deposits. |
| Measurements: | grwcsphotsizeM1.a1:
grwcsphotcoarsepfn1M1.a1:
grwcsphotalm1duboM1.a1:
grwcsphotfinepfn1M1.a1:
grwcsphotppM1.a1:
grwcsphotaotfiltqaM1.a1:
grwcsphottotalpfn1M1.a1:
grwcsphotaotfiltM1.a1:
grwcsphotalmM1.a1:
grwcsphotaotM1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/13/2009 | 0000 | 10/31/2009 | 2359 |
| Subject: | GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields |
| DataStreams: | grwvceil25kM1.b1 |
| Description: | Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. |
| Measurements: | grwvceil25kM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/01/2009 | 0000 | 03/31/2010 | 1700 |
| Subject: | GRW/MWR/M1 - Reprocessed: Biased LWP retrievals-Updated retrieval coefficients |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| Description: | Retrieval coefficients were updated to screen for some bad soundings. Data were reprocessed 20100507. |
| Measurements: | grwmwrtipM1.a1:
grwmwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/09/2010 | 1048 | 02/11/2010 | 1045 |
| Subject: | GRW/MWR/M1 - Incorrect ambient temperature |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| Description: | The ambient temperature readings are incorrect. Problem appeared to have started around 10:48 GMT on 02/09, but was not really noticeable until slightly after 11 GMT, when tkair values dipped considerably. The dewblower was replaced on 2/11 and temperature readings returned to normal. |
| Measurements: | grwmwrtipM1.a1:
grwmwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 03/25/2010 | 0000 | 05/06/2010 | 2359 |
| Subject: | GRW/CSPHOT/M1 - Instrument scanning problem |
| DataStreams: | grwcsphotalm1duboM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotaotfiltM1.a1, grwcsphotaotfiltqaM1.a1, grwcsphotcoarsepfn1M1.a1, grwcsphotfinepfn1M1.a1, grwcsphotppM1.a1, grwcsphotsizeM1.a1, grwcsphottotalpfn1M1.a1 |
| Description: | There were problems with the almucantar scans causing difficulty in tracking the sun between the almucantar scans for each wavelength. The instrument was due for calibration and maintenance. This unit was replaced on 5/6/2010. |
| Measurements: | grwcsphotsizeM1.a1:
grwcsphotcoarsepfn1M1.a1:
grwcsphotalm1duboM1.a1:
grwcsphotfinepfn1M1.a1:
grwcsphotppM1.a1:
grwcsphotaotfiltqaM1.a1:
grwcsphottotalpfn1M1.a1:
grwcsphotaotfiltM1.a1:
grwcsphotalmM1.a1:
grwcsphotaotM1.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/28/2010 | 0810 | 04/28/2010 | 1410 |
| Subject: | GRW/MWRP/M1 - Failed LN2 calibration |
| DataStreams: | grwmwrpM1.b1 |
| Description: | On 4/28 we tried to perform a LN2 calibration. Because of high humidity and lack of heater the calibration was unsuccessful and wrong calibration coefficients were uploaded in the configuration file. At 14:10 UTC the old configuration file was reinstated. |
| Measurements: | grwmwrpM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/11/2010 | 1800 | 08/09/2010 | 1400 |
| Subject: | GRW/MWR/M1 - Incorrect instrument computer set-up |
| DataStreams: | grwmwrtipM1.a1, grwmwrlosM1.b1 |
| Description: | Starting late on 07/11 the instrument began to have very brief (< 1 min) data outages every few hours. By 07/12 data had become noticeably incorrect, particularly the PWV, LWP, TB23, and TB31. At ~17 Z on 0713 the missing data / no data available flags became more frequent. The problem was identified as improper settings of the instrument computer and was solved on 8/9. |
| Measurements: | grwmwrtipM1.a1:
grwmwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/20/2010 | 1200 | 08/09/2010 | 1400 |
| Subject: | GRW/MWR/M1 - Erratic brightness temperature |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| Description: | Around 12 Z on 7/20 both the PWV and 23.8 GHz brightness temp values began to diverge from those of the MWRP. By 7/22 both the LWP and 31.4 GHz brightness temp had followed suit. At 0600 Z on 7/22 multiple (10-20), brief (<=1 min) data outages began appearing hourly. The problem persisted intermittently until 8/9. On 8/9, changes in the settings of the computer restored the proper functionality of the MWR software. |
| Measurements: | grwmwrtipM1.a1:
grwmwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/04/2010 | 1600 | 07/06/2010 | 1400 |
| Subject: | GRW/MWR/M1 - Missing data |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| Description: | Data are missing and unrecoverable. |
| Measurements: | grwmwrtipM1.a1:
grwmwrlosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 07/01/2010 | 0000 | 09/08/2010 | 1532 |
| Subject: | GRW/MWRP/M1 - Reprocessed: Updated calibration coefficients |
| DataStreams: | grwmwrpM1.b1 |
| Description: | On 9/8/2010 the calibration of of the K-band channels was updated. This caused a slight decrease of the retrieved liquid water path. Updated calibrations have been applied to data from 7/1-9/8. The LWP was decreased slightly as a result of the recalibration. Reprocessed data were archived in November 2010. |
| Measurements: | grwmwrpM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 05/20/2010 | 0810 | 05/26/2010 | 1100 |
| Subject: | GRW/AOS/M1 - Annual maintenance |
| DataStreams: | grwaosM1.a1, grwaosauxM1.a1, grwaosccnM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1, grwnoaaaosfitrhM1.b1 |
| Description: | Instruments were down for annual maintenance. |
| Measurements: | grwaosauxM1.a1:
grwaosccnM1.a1:
grwnoaaaosavgM1.b1:
grwnoaaaosfitrhM1.b1:
grwaosM1.a1:
grwnoaaaosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/15/2009 | 0000 | 12/31/2009 | 0000 |
| Subject: | GRW/AOS/M1 - Data processing problem |
| DataStreams: | grwaosM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1 |
| Description: | The AOS data was reprocessed for the AMF, SGP and NSA sites. There was an error in the processing of the corrections for the PSAP absorption signal such that a low pass filter was implemented for the scattering data used in these corrections.The difference between the corrected and previous data is < 0.05 Mm-1 (below the instrument detection limit) and should not have a significant effect on the previous data. Data will be reprocessed at a later time when more significant changes to the data processing are implemented. |
| Measurements: | grwnoaaaosavgM1.b1:
grwaosM1.a1:
grwnoaaaosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/19/2010 | 0657 | 12/31/2010 | 1200 |
| Subject: | GRW/AOS/M1 - Discontinue fRH hygroscopic growth measurements |
| DataStreams: | grwnoaaaosM1.b1, grwnoaaaosfitrhM1.b1 |
| Description: | The chopper motor in the reference or dry nephelometer started to fail, which meant that it wasn't rotating at the correct rpm. The instrument gave erroneous data. The wet neph was swapped for the dry neph and the humidified nephelometer measurements were shut down. The neph motors were replaced at the end of the deployment so that both nephs will be operating for GVAX. |
| Measurements: | grwnoaaaosfitrhM1.b1:
grwnoaaaosM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/23/2010 | 0000 | 01/06/2011 | 0759 |
| Subject: | GRW/MWRP/M1 - Temp/RH sensor failure |
| DataStreams: | grwmwrpM1.b1 |
| Description: | The temperature and humidity sensor failed causing software crashes and poor retrieval quality. Surface temperature and humidity are incorrect and the bad temperature readings affected the retrievals. Users should completely disregard retrievals from this instrument. |
| Measurements: | grwmwrpM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/30/2010 | 0000 | 05/04/2010 | 0000 |
| Subject: | GRW/MPL/M1 - Time clock Error |
| DataStreams: | grwmplpolM1.b1, grwmplpolavgM1.c1, grwmplpolavgM1.s1 |
| Description: | Domain Time II was not installed or working properly on the MPLPOL instrument at the initial start at GRW. The clock was off by 5 minutes 55 seconds at the beginning of the period and drifted further so it was off by 6 minutes 8 seconds at the end of the time period. |
| Measurements: | grwmplpolavgM1.s1:
grwmplpolavgM1.c1:
grwmplpolM1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/27/2009 | 0000 | 09/08/2009 | 0825 |
| Subject: | GRW/AOS/M1 - CPC undercounting |
| DataStreams: | grwaosM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1 |
| Description: | The CPC was undercounting by about 10-20 percent relative to the CCN. After cleaning the CPC and replacing the butanol, the signal increased to above that of the CCN. Increase CPC signal so that it equals the CCN signal at the maximum SS value. The corrected signal will represent relative and not an absolute particle concentration. |
| Measurements: | grwnoaaaosavgM1.b1:
grwaosM1.a1:
grwnoaaaosM1.b1:
|